/**
 * Biometric Template Extraction
 * ZK-AI Proof of Humanity: Face Descriptor Generation
 */
import type { BiometricTemplate, FaceZKConfig } from '../types';
import type { FuzzyHashConfig } from './fuzzy-hash';
/** Face mesh keypoints for biometric analysis */
export interface FaceMesh {
    /** 468 face mesh points */
    points: number[][];
    /** Face bounding box */
    box: [number, number, number, number];
    /** Confidence score */
    confidence: number;
}
/** Extract biometric template from face mesh */
export declare function extractTemplate(faceMesh: FaceMesh, config: FaceZKConfig): Promise<BiometricTemplate>;
/** Generate non-reversible biometric ID (Sₐ) using fuzzy-tolerant hashing */
export declare function generateBiometricId(template: BiometricTemplate, fuzzyConfig?: FuzzyHashConfig): string;
/** Generate Humanity Code (Hₐ = SHA256(Sₐ || SYSTEM_SALT)) */
export declare function generateHumanityCode(biometricId: string, systemSalt: string): string;
/** Compare two biometric templates using fuzzy-tolerant hashing */
export declare function compareTemplates(template1: BiometricTemplate, template2: BiometricTemplate, threshold?: number, fuzzyConfig?: FuzzyHashConfig): {
    similarity: number;
    match: boolean;
};
/** Validate biometric template */
export declare function validateTemplate(template: BiometricTemplate): string[];
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